On Vegetarian's Day we appeal to people to eat more vegetables and less meat, 

and call for people developing to develop the a healthy eating habit.
We will organize some activities as well.
For example, there will be a parade that in which people dress up like vegetables.
Hold We will hold a cooking competition and all participants must use vegetables to make food.
On the other hand, In order to help people know gain more knowledge of vegetarianism,
we plan to hold a knowledge contest, and the people whoever who take part in it can receive a gift.
In addition, we will invite the people who do well in the cook to teach people how to make a delicious healthy meal using only use vegetables.

I think it's a great idea! While I'm not a vegetarian, I do agree that humans eat far too much meat.